// 从url中查询到指定名称的参数值
export const getParam = function (name: any, defaultValue: any) {
    var query = window.location.search.substring(1);
    var vars = query.split("&");
    for (var i = 0; i < vars.length; i++) {
        var pair = vars[i].split("=");
        if (pair[0] == name) { return pair[1]; }
    }
    return (defaultValue == undefined ? null : defaultValue);
}
